Royal Navy (retired officers). Return of the number and rank of officers of the Royal Navy between the ages of 40 and 60 years, who, by reason of compulsory retirement under regulation as to age, were upon the retired list on the 1st day of April 1903, and who, during their active service, qualified as torpedo lieutenants and became specialists in submarine mining, and showing the annual aggregate charges borne on the non-effective votes for such officers [electronic resource].